YK-11 All You Need to Know: Dosage, Benefits, and Side Effects

 »  »  YK-11 All You Need to Know: Dosage, Benefits, and Side Effects


  1. What is YK-11?
  2. How Does YK-11 Work?
  3. YK-11 and Bodybuilding
  4. Study & Development
  5. Benefits
  6. Side Effects
  7. Dosage
  8. FAQ (Frequently Asked Questions)
  9. Conclusion

YK11 is quite possibly one of the most potent medications on the market today, due to its unique nature as both a SARM and a myostatin inhibitor, it helps promote lean muscle growth and unlocks your natural bodybuilding potential.

What is YK-11?

YK11 is a member of the SARMS class of research chemicals, which were initially developed to treat muscle wasting in cancer patients. SARMs, or selective androgen receptor modulators, have potent muscle-building effects and are generally well tolerated in studies. While SARMs were initially developed to help cancer patients combat muscle wasting, bodybuilders quickly realized that healthy people who took SARMs could experience steroid-like effects.

While there isn’t much clinical evidence to support YK11, anecdotal evidence suggests it’s a highly effective muscle-building supplement. Indeed, as we’ll see shortly, lab rats given YK11 as a treatment experienced absolutely mind-boggling muscle growth and results. The World Anti-Doping Agency (WADA) has classified YK11, along with other SARMs, as an anabolic substance, and thus prohibits its use in athletic competitions such as the Olympics.

The United States Anti-Doping Agency, or USADA for short, has also prohibited the use of SARMs in athletic competitions, demonstrating their effectiveness. If you’re an athlete, you may be tested for these drugs; if you’re not, there are no legal ramifications to worry about. It is completely legal to buy and sell YK11 online, but we recommend that you do so through a reputable vendor.

How Does YK-11 Work?

YK-11 is a new product on the market that was first synthesized in Japan in 2011. The soul who created it categorized it as the best SARM, but further investigation revealed that it may not be accurate. Its chemical structure is much closer to that of an asteroid than to that of a Selective Steroid Receptor Modulator. 

The thing is, it works in two ways. Because it is a partial agonist of the androgen receptor, it will mimic androgenic hormone (DHT). But that’s not the whole story. However, YK-11 works, and thus its effects on the body are as follows:

Organizes Hormones

YK-11 is a myostatin that inhibits myogenesis. Myostatin is a supermolecule found in the body that is closely linked to muscle development. They are unrestricted in their ability to help regulate muscle growth. There would be no controlled muscle growth if they did not exist. If you have testosterone, HGH, IGF-1, and thus the protein fuel driving muscle growth, but nothing to hold it back and tell it to slow down, you get out-of-control growth. As a result, taking YK-11, once you’ve figured out YK-11 gets to figure out inhibiting the assembly of those hormones. As a result, muscle growth is much more aggressive.

Combines with Other Properties

YK-11 has androgenic properties. Because the body shuts down, it will mimic androgenic hormones and consume testosterone. Steroid effects will be felt in your muscles and bones. However, YK-11 is a steroid in the sense that its structure is closely supported by DHT, a stronger type of testosterone. The fact that it is an agonist that mimics DHT means that it will have a minor effect on the prostate, liver, and hair. As a result, YK-11 will produce additional hair growth on the body.

Targets Muscles

Because it is androgenic and a myostatin inhibitor, YK-11 has been shown to specifically target muscle tissue. Though DHT mimicking affects different components of the body in a minor way, it is the combination of these two, acting entirely on muscle tissue rather than bone or ligaments, that makes it aggressive. This may result in incredible muscle growth, but there is a snag that I’ll address later.

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YK-11 and Bodybuilding

Bodybuilders are interested in YK11 because of its unique ability to induce Follistatin and significantly help build muscle mass. YK11, on the other hand, is not an approved nutritional supplement or stimulant for athletes. It is an experimental substance that has received little scientific attention thus far. Furthermore, the potential side effects of YK11 have yet to be scientifically investigated (at all). This means that such unscientific, experimental use (abuse) of YK11 can be extremely risky or dangerous.

Individuals who use YK11 can expect to see a significant increase in muscle growth. Along with significant muscle gains, the time it takes for muscle growth to occur is reduced. YK11, unlike many anabolic steroids, does not cause water retention. This means that any muscle mass growth experienced by the individual will be solid muscle tissue, also known as dry growth.

Aside from increased muscle tissue, there is an increase in the amount of body fat burned. YK11 inhibits the body’s ability to store fat, resulting in a more defined physique. More calories can be burned when combined with increased muscle mass, transforming your body into a powerful fat-burning machine.

Because YK11 is neither an anabolic steroid nor a SARM, it will not cause any of the common side effects associated with them. As a result, it is a highly effective supplement for increasing muscle mass, energy levels, and mood while decreasing body fat and the risk of side effects.

YK11 complements andarine, lgd 4033, ostarine, and andarine well. The majority of people find the substance to be free of side effects. It is critical to exercise while taking the supplement to promote muscle growth. People typically notice an increase in muscle size in a short period of time, as well as improved stamina and overall health and well-being.

Study and Development

YK11 has a chemical structure similar to the hormone dihydrotestosterone (DHT), from which it is derived, and both YK11 and DHT bind to androgen receptors (AR). YK11, unlike DHT, does not induce the physical interaction between NTD/AF1 and LBD/AF2 (known as the N/C interaction), which is required for full AR transactivation. In other words, YK11 only partially activates AR without the N/C interaction. 

Such limited (partial) activation of androgen receptors raises catabolic activity in the body. YK11, on the other hand, promotes the expression of Follistatin (FST), an autocrine glycoprotein that is a powerful inhibitor of the effects of Myostatin, a protein that inhibits muscle growth. As a result, the potent anabolic effect of YK11 is thought to be primarily due to the induction of Follistatin expression, which blocks the effects of Myostatin. In C2C12 myoblasts, the resulting anabolic activity of YK11 is more potent than DHT’s anabolic activity.

YK11 is fundamentally different from other “classic” SARMs (such as LGD-4033, Ostarine, or RAD140) in several ways:

  1. While most SARMs have a non-steroidal structure and are non-steroidal selective androgen receptor modulators, the structure of YK11 was derived from the structure of 5–dihydrotestosterone (DHT), so YK11 is a steroidal selective androgen receptor modulator (SARM).
  2. Furthermore, while most SARMs are full agonists of the androgen receptor (AR), YK is only a partial agonist. Full agonists bind to and activate a receptor with the greatest possible response that an agonist can elicit at the receptor. Partial agonists bind to and activate the same receptor as full agonists, but have only a fraction of the efficacy at the receptor. Even with full receptor occupancy, a partial agonist does not reach the system’s maximum response capability.
  3. Third, YK11 is unique in that it promotes the expression of follistatin (FST). Follistatin is not known to be induced by conventional SARMs.

Because of these differences, the mechanism of action of YK11 differs significantly from the mechanism of action of conventional SARMs. As a result, its potential side effects, risks, and severity may differ from that of common non-steroidal SARMs. More extensive research is also required in this area.

YK11, like many androgens, steroids, and other SARMs, can bind to androgen receptors in bone tissues and increase bone strength. A 2018 scientific study found that YK11 treatment accelerated cell proliferation and mineralization in MC3T3-E1 mouse osteoblast cells. 

Furthermore, YK11-treated cells increased osteoblast-specific differentiation markers like osteoprotegerin and osteocalcin when compared to untreated cells. Increased levels of activated PKB (protein kinase B) in cells imply that YK11 activates the Akt / PKB signaling pathway via non-genomic AR signaling. The Akt/PKB signaling pathway regulates androgen-mediated osteoblast differentiation.

Benefits of YK-11

The advantages of YK11 are numerous. Unlike anabolic steroids, the compound’s mechanism only targets specific cells. Many of the negative side effects associated with anabolic steroids, SARMs, and human growth hormones are eliminated. The following are some of the advantages of using YK11:

  • Promotes muscle growth at a much higher rate than would be possible without it
  • There will be no water retention or its associated side effects. 
  • A significant increase in follistatin levels in the body
  • Decrease in myostatin levels.
  • Significant and selective anabolic effect on muscles and bones (osteogenic activity)
  • Can help strengthen bones
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Side Effects of YK-11

Unwanted Hair Growth

It has the potential to stimulate hair growth. This is a neutral effect for many men. But since hair loss can be caused by anabolic steroid use on a regular basis, making YK11 somewhat ideal for resolving this issue.

Develops Gynecomastia

The development of male breast tissue, known as gynecomastia, is a possibility. The vast majority of YK11 users do not experience this side effect, but long-term use can contribute to it.

Mood Swings

Mood swings are common and can lead to an increase in aggressive behavior. If mood changes are observed, the dosage should be reduced. Those who take the recommended dosage experience few mood swings.

Liver Toxins

YK11 contains a methyl ester. Methyl esters are known to be liver toxins. This is usually not a problem if the recommended dose is followed and the effects on the liver are negligible.


It is possible to become addicted to this SARM. When you stop using the compound, you may notice a decrease in muscle mass.

Sexual Problems

The substance may have an effect on prostate health. This can result in sexual dysfunction and a decrease in libido. Unlike other steroids, however, it does not contribute to prostate problems, as other steroids are known to do.


It is suggested that a daily dose of 5 mg be taken. Those who take less than 5 mg of YK11 per day may not see any results. Those who have previously used SARMs should find 10 mg to 20 mg of YK11 tolerable.

The majority of people will notice rapid muscle growth at 10 mg. However, never take more than 20 mg of the compound to try to speed up results. The maximum safe limit is 20 milligrams, where the majority of people experience little to no side effects.

As with all supplements and medications, the more you take, the more likely you are to experience negative side effects. The dosage of 20 mg has been shown to provide significant muscle growth while remaining safe.

For those who use anabolic steroids or medication. It is advised that you first check for any potential contraindications. If you are unsure, you should consult your doctor before beginning to take it. If you experience any serious or long-term adverse side effects, you should stop using it right away.


When should you take YK11?

It is advised to take YK11 once per day since it has a relatively long half-life. If you are taking a high dosage, it can also spread the dosage into two servings.

How long does YK11 take to work?

According to the user feedback, the compound takes about a week to start working. Please keep in mind that some users found it to take a little longer.

Does YK11 really work?

Without a doubt. It’s a fantastic product for increasing building size and strength, but data on it is scarce. We have no doubts about YK11’s effectiveness.

Does YK11 cause Gyno?

No, under any circumstances, Yk11 should not be causing gyno. If you believe it is causing gyno, it is possible that you received a counterfeit product. Make certain to purchase from reputable sources.

What about a YK11 MK677 stack?

The YK11 MK677 stack has a lot of fans. MK-677 is a growth hormone secretagogue, which means it will increase your HGH levels. When combined with YK, you’ll be making significant progress in terms of size and strength.


YK11 is one of the most potent muscle growth supplements on the market today. It has been shown to promote the development and growth of lean muscle mass and is thought to be safe to use. Because the substance is not a SARM, any future bans or changes to the law are unlikely to make it a prohibited substance. Although it is frequently mislabeled as a SARM, it is actually a pro-hormone.

Because it is a selective compound, it only affects certain cells in the body. This is where it distinguishes itself from anabolic steroids. It also has fewer side effects, making it an excellent option for those who cannot tolerate steroids. YK11 is the ultimate non-steroid choice for muscle growth and fat loss due to its safety and fast-acting effects.

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The information provided above is not intended to substitute professional medical advice, diagnosis, or treatment. Always seek your physician’s advice or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have seen or read. We bear no responsibility or liability for your use of any compound.